I'm getting yellow pine for the bed of the truck today, 2x12s, 12 foot long. The cross sills on the bed are 3/16 thick. I figure 4 rows of fasteners with two per board at each cross sill. Flat-head plow bolts would be one option. Recessed pan head screws with washers would be another. If I routed the top of one board and the bottom of the next and overlap I could get by with one fastener per board per cross sill. That would also allow for expansion/contraction without having a gap, just a recess in the surface. This bed will probably be painted black. (If it were pretty I would be hesitant to use it!).

What would you guys recommend?

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Last edited by ScottGMC40001964; 08/18/2009 7:03 PM.